Delta DVP-10PM, Руководство по применению

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5
Categories and Use of Basic Application Instructions
DVP-PM Operation Instruction
5-136
API Mnemonic Operands Function
203 D SCLP P Parameter proportional value calculation
Controllers
20PM 10PM
Bit Devices Word devices Program Steps
Type
OP
X Y M S K H KnX KnY KnM KnS T C D V Z
S
1
* * *
S
2
* * *
D *
SCLP, SCLPP: 9 steps
DSCLP, DSCLPP: 13 steps
Operands:
S
1
: Source value
S
2
: Parameters
D
: Operation result
Explanations:
1. SCLP instruction performs a proportional calculation according to the internal slope equation as well as the
parameters set in this instruction.
2. Settings of
S
2
for 16-bit instruction (occupies 4 consecutive devices):
Device No. Parameter Range
S
2
Max. source value -32768~32767
S
2
+1 Min. source value -32768~32767
S
2
+2 Max. destination value -32768~32767
S
2
+3 Min. destination value -32768~32767
3. Settings of
S
2
for 32-bit instruction (occupies 8 consecutive devices).
Range
Device No. Parameter
Integer
Floating point
number
S
2
、
S
2
+1 Max. source value
S
2
+2
、
3 Min. source value
S
2
+4
、
5 Max. destination value
S
2
+6
、
7 Min. destination value
-2,147,483,648~2,147,483,647
Range of 32-bit
floating point number
4. Operation equation in the instruction:
D
= [(
S
1
– min. source value) × (max. destination value – min. destination
value)] ÷ (max. source value – min. source value) + min. destination value
5. The equation to obtain the operation equation of the instruction:
y = kx + b
where
y
= Destination value (
D
)
k
= Slope = (max. destination value – min. destination value) ÷ (max. source value – min. source value)
x
= Source value (
S
1
)
b
= Offset = Min. destination value – Min. source value × slope
6. Substitute the above parameters into
y = kx + b
and the operation instruction can be obtained. y = kx + b = D =
k
S
1
+ b = slope ×
S
1
+ offset = slope ×
S
1
+ min. destination value – min. source value × slope = slope × (
S
1
–
min. source value) + min. destination value = (
S
1
– min. source value) × (max. destination value – min.
destination value) ÷ (max. source value – min. source value) + min. destination value